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Reports Library

The Reports Library features scientific assessments, annual reports, strategic research plans, and other resources produced by USGCRP and the collaborative efforts of our member agencies. Select reports by other authoritative scientific bodies with whom we work, such as the Intergovernmental Panel on Climate Change (IPCC) and the National Research Council (NRC), are also accessible here. Most reports are available for download (open and click View); some can be ordered in print free of charge (open and click Add to Cart).

Please note that we are currently experiencing shipping delays of at least two weeks. Thank you for your patience.

Fourth National Climate Assessment Vol I + II

The Fourth National Climate Assessment (NCA4), completed in November 2018, is a comprehensive and authoritative report on climate change and its impacts in the United States.

An Update to Key Findings of Snow, Water, Ice and Permafrost in the Arctic (SWIPA) 2017. Drawing and building on the findings of AMAP’s Snow, Water, Ice and Permafrost in the Arctic (SWIPA) 2017 assessment, this document provides updated observations, information from other recent assessments, and conclusions from the latest reviews of Arctic trends and indicators. The pace of change in the Arctic is so rapid that new records are being set annually, and each additional year of data strengthens the already compelling evidence of a rapidly changing Arctic.

The FY2018–19 edition of USGCRP’s annual report to Congress, Our Changing Planet , responds to the Global Change Research Act mandate to provide an overview of the Program’s progress in delivering on its strategic goals as well as a summary of agency expenditures under USGCRP’s budget crosscut.

The Report-in-Brief includes plain-language highlights and the technical executive summary. The Second State of the Carbon Cycle Report (SOCCR2) provides a current state-of-the-science assessment of the carbon cycle in North America and its connection to climate and society. Information from the report is relevant to climate and carbon research as well as to management practices in North America and around the world.

The Second State of the Carbon Cycle Report (SOCCR2) provides a current state-of-the-science assessment of the carbon cycle in North America and its connection to climate and society. Information from the report is relevant to climate and carbon research as well as to management practices in North America and around the world.

The Overview is a summary of the findings of NCA4 Vol. II, as presented in Chapter 1 of the full report. Volume II of the Fourth National Climate Assessment focuses on the human welfare, societal, and environmental elements of climate change and variability for 10 regions and 18 national topics, with particular attention paid to observed and projected risks, impacts, consideration of risk reduction, and implications under different mitigation pathways. Where possible, NCA4 Vol. II provides examples of actions underway in communities across the United States to reduce the risks associated with

The Report-in-Brief consists of the NCA4 Vol. II Front Matter, Overview, and Executive Summaries of each chapter. Volume II of the Fourth National Climate Assessment focuses on the human welfare, societal, and environmental elements of climate change and variability for 10 regions and 18 national topics, with particular attention paid to observed and projected risks, impacts, consideration of risk reduction, and implications under different mitigation pathways. Where possible, NCA4 Vol. II provides examples of actions underway in communities across the United States to reduce the risks

This assessment report presents the results of the 2018 AMAP Assessment of the Biological Effects of Contaminants on Arctic Wildlife and Fish. The assessment updates information presented in the AMAP POP's assessment delivered in 2009, specifically with respect to information on biological effects of organohalogenated compunds (OHCs), and the AMAP assessment of Mercury in the Arctic that was delivered in 2011.

This assessment report presents the results of the 2018 Arctic Monitoring and Assessment Programme (AMAP) assessment of Arctic Ocean Acidification . This is the second such assessment dealing with ocean acidification from an Arctic-wide perspective , and complements several assessments that AMAP has delivered over past years concerning the effects of climate change on Arctic ecosystems and people.